njrat | c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1

General

Target

c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1.exe
Size

23KB
MD5

d116ef4d72d1f18eb289c90f6cdacc25
SHA1

d489491a8abaa46f52becbc65b7c5281fb132a21
SHA256

c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1
SHA512

f923ce8efa7fe92815942f5aa61d40e40ff4323d6b6cfa46ab1db95a1bbb6e9479e969c419ae99367213d79f11b22f865e81e45938a3cb06462df1ac0b956db4
SSDEEP

384:7pslUlEvOEJ8xWwYJOMiOBZEdj1567gtwi5HhbQmRvR6JZlbw8hqIusZzZ1t:76eEvwIlLMRpcnus

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

nahas.no-ip.org:200

Mutex

93cd846be1ac2a1f71172fcb9325576b

Attributes

reg_key
93cd846be1ac2a1f71172fcb9325576b
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 1 IoCs

pid	Process
1924	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4412	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\93cd846be1ac2a1f71172fcb9325576b.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\93cd846be1ac2a1f71172fcb9325576b.exe	server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\93cd846be1ac2a1f71172fcb9325576b = "\"C:\\Users\\Admin\\AppData\\Roaming\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\93cd846be1ac2a1f71172fcb9325576b = "\"C:\\Users\\Admin\\AppData\\Roaming\\server.exe\" .."	server.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe
Token: 33	1924	server.exe
Token: SeIncBasePriorityPrivilege	1924	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 1924	4260	c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1.exe	83
PID 4260 wrote to memory of 1924	4260	c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1.exe	83
PID 4260 wrote to memory of 1924	4260	c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1.exe	83
PID 1924 wrote to memory of 4412	1924	server.exe	87
PID 1924 wrote to memory of 4412	1924	server.exe	87
PID 1924 wrote to memory of 4412	1924	server.exe	87

C:\Users\Admin\AppData\Local\Temp\c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1.exe
"C:\Users\Admin\AppData\Local\Temp\c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Users\Admin\AppData\Roaming\server.exe
  "C:\Users\Admin\AppData\Roaming\server.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\server.exe

Filesize
23KB

MD5
d116ef4d72d1f18eb289c90f6cdacc25

SHA1
d489491a8abaa46f52becbc65b7c5281fb132a21

SHA256
c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1

SHA512
f923ce8efa7fe92815942f5aa61d40e40ff4323d6b6cfa46ab1db95a1bbb6e9479e969c419ae99367213d79f11b22f865e81e45938a3cb06462df1ac0b956db4

Download Submit
C:\Users\Admin\AppData\Roaming\server.exe

Filesize
23KB

MD5
d116ef4d72d1f18eb289c90f6cdacc25

SHA1
d489491a8abaa46f52becbc65b7c5281fb132a21

SHA256
c637382c266b87af51ee6c3b086b3e9acfa27cb83e0de7f457a07f5608cf63a1

SHA512
f923ce8efa7fe92815942f5aa61d40e40ff4323d6b6cfa46ab1db95a1bbb6e9479e969c419ae99367213d79f11b22f865e81e45938a3cb06462df1ac0b956db4

Download Submit
memory/1924-138-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/1924-140-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4260-132-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4260-133-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4260-137-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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